Katsuhiro Takenaga

According to our database, Katsuhiro Takenaga authored at least 53 papers between 2006 and 2024.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of three.

2024

High-Density Weakly-Coupled 4-core MCF with 160-μm Coating for O-band Application.

Shota Kajikawa, Mayu Iizuka, Takuya Oda, Katsuhiro Takenaga, Kentaro Ichii

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2024

Development of Four-Core MCFs with Standard Cladding Diameter from High-Core-Count MCFs.

Kazuhiko Aikawa, Takuya Oda, Shota Kajikawa, Kohei Ozaki, Mayu Iizuka, Katsuhiro Takenaga, Akito Nishimura, Kentaro Ichii

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2024

2023

Loss performance of field-deployed high-density 1152-channel link constructed with 4-core multicore fiber cable.

Takuya Oda, Shota Kajikawa, Katsuhiro Takenaga, Okimi Mukai, Daiki Takeda, Nikhil Angra, Usman Nasir, Jongchul Park, Jing Zhang, Victor Kopp, Daniel Neugroschl, Kentaro Ichii

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2023

Characteristics of Over 600-km-Long 4-core MCF Drawn from a Single Preform.

Shota Kajikawa, Tsubasa Saito, Katsuhiro Takenaga, Kentaro Ichii

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2023

2022

Behavior of intercore crosstalk in square-layout uncoupled four-core fibers.

Masanori Koshiba, Yasuo Kokubun, Mayu Nakagawa, Masaki Ohzeki, Katsuhiro Takenaga

IEICE Electron. Express, 2022

Multi-Core Fiber Link with Its Polarity Management in View.

Takuya Oda, Osamu Kikuchi, Katsuhiro Takenaga, Kentaro Ichii

Proceedings of the 2022 27th OptoElectronics and Communications Conference (OECC) and 2022 International Conference on Photonics in Switching and Computing (PSC), 2022

Estimating Crosstalk Between Diagonal Cores in Four-Core Fibers with Square Lattice Structure.

Mayu Nakagawa, Masaki Ohzeki, Yusuke Sasaki, Katsuhiro Takenaga, Kentaro Ichii

Proceedings of the 2022 27th OptoElectronics and Communications Conference (OECC) and 2022 International Conference on Photonics in Switching and Computing (PSC), 2022

Ultra-high-density optical cable with advanced optical fibers.

Shoichiro Matsuo, Kenji Yamashiro, Yusuke Tsujimoto, Noriaki Yamashita, Okimi Mukai, Yusuke Sasaki, Katsuhiro Takenaga

Proceedings of the 2022 27th OptoElectronics and Communications Conference (OECC) and 2022 International Conference on Photonics in Switching and Computing (PSC), 2022

Side-view Rotational Alignment Method for Trench-assisted 4-core Fibers.

Masaki Ohzeki, Yusuke Sasaki, Katsuhiro Takenaga, Kentaro Ichii, Kazuhiko Aikawa

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2022

2021

Optical Fiber Cable Employing 200 µm-Coated Multicore Fibers for High Density Wiring in Datacom.

Yusuke Sasaki, Ryohei Fukumoto, Katsuhiro Takenaga, Shogo Shimizu, Kazuhiko Aikawa

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2021

Variations in the Optical Characteristics of 200 μm and 250 μm Coated Multicore Fibres Owing to Cabling.

Yusuke Sasaki, Ryohei Fukumoto, Katsuhiro Takenaga, Shogo Shimizu, Kazuhiko Aikawa

Proceedings of the European Conference on Optical Communication, 2021

2020

Asymmetrically Arranged 8-Core Fibers with Center Core Suitable for Side-View Alignment in Datacenter Networks.

Yusuke Sasaki, M. Ozeki, Katsuhiro Takenaga, Kazuhiko Aikawa

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2020

2019

Multicore Fiber Connectors with Small Mode Field Diameter.

Yusuke Sasaki, Katsuhiro Takenaga, Kazuhiko Aikawa

Proceedings of the 2019 24th OptoElectronics and Communications Conference (OECC) and 2019 International Conference on Photonics in Switching and Computing (PSC), 2019

Cladding Diameter Dependence of Inter-Core Crosstalk in Heterogeneous Multicore Fibers.

Kenta Nishimura, Takanori Sato, Takeshi Fujisawa, Yoshimichi Amma, Katsuhiro Takenaga, Kazuhiko Aikawa, Kunimasa Saitoh

Proceedings of the 2019 24th OptoElectronics and Communications Conference (OECC) and 2019 International Conference on Photonics in Switching and Computing (PSC), 2019

Multi-core Fiber Fabrication in Over-Cladding Bundled Rods Method Applying Polygonal Rods.

Ryohei Fukumoto, Katsuhiro Takenaga, Kazuhiko Aikawa

Proceedings of the 2019 24th OptoElectronics and Communications Conference (OECC) and 2019 International Conference on Photonics in Switching and Computing (PSC), 2019

2018

Non-circular multi-core fibers for super-dense SDM.

Md. Nooruzzaman, Kunimasa Saitoh, Yusuke Sasaki, Katsuhiro Takenaga, Kazuhiko Aikawa, Toshio Morioka

IEICE Electron. Express, 2018

DMD-Unmanaged Long-Haul SDM Transmission Over 2500-km 12-core × 3-mode MC-FMF and 6300-km 3-mode FMF Employing Intermodal Interference Cancelling Technique.

Kohki Shibahara, Takayuki Mizuno, L. Doowhan, Yutaka Miyamoto, Hirotaka Ono, Kazuhide Nakajima, S. Saitoh, Katsuhiro Takenaga, Kunimasa Saitoh

Proceedings of the Optical Fiber Communications Conference and Exposition, 2018

Demonstration of a Rectangularly-Arranged Strongly-Coupled Multi-Core Fiber.

S. Saitoh, Katsuhiro Takenaga, Kazuhiko Aikawa

Proceedings of the Optical Fiber Communications Conference and Exposition, 2018

Iterative Unreplicated Parallel Interference Canceler for MDL-Tolerant Dense SDM 12-Core×3-Mode Transmission Over 3000 km.

Kohki Shibahara, Takayuki Mizuno, Doowhan Lee, Yutaka Miyamoto, Hirotaka Ono, Kazuhide Nakajima, Yoshimichi Amma, Katsuhiro Takenaga, Kunimasa Saitoh

Proceedings of the European Conference on Optical Communication, 2018

High Density Uncoupled Multicore Fibres Employing Thermal Expanded Core Techniques for Low Connection Loss.

Yusuke Sasaki, Katsuhiro Takenaga, Kazuhiko Aikawa

Proceedings of the European Conference on Optical Communication, 2018

120 Spatial Channel Few-Mode Multi-Core Fibre with Relative Core Multiplicity Factor Exceeding 100.

Taiji Sakamoto, Kunimasa Saitoh, Shota Saitoh, Yoshiteru Abe, Katsuhiro Takenaga, Azusa Urushibara, Masaki Wada, Takashi Matsui, Kazuhiko Aikawa, Kazuhide Nakajima

Proceedings of the European Conference on Optical Communication, 2018

108 Tb/s Transmission Over 120 km of 7-Core Multicore Fiber with Integrated Cladding Pumped Multicore Amplifiers.

Talha Rahman, Bernhard Spinnler, Stefano Calabrò, Erik De Man, Klaus Pulverer, Bernd Sommerkorn-Krombholz, Carlos Castro, Takayuki Mizuno, Yutaka Miyamoto, Katsuhiro Takenaga, Saurabh Jain, Yongmin Jung, Shaif-Ul Alam, Toshio Morioka

Proceedings of the European Conference on Optical Communication, 2018

2017

Single-mode 37-core fiber with a cladding diameter of 248 μm.

Yusuke Sasaki, Katsuhiro Takenaga, Kazuhiko Aikawa, Yutaka Miyamoto, Toshio Morioka

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2017

Low crosstalk 125 μm-cladding multi-core fiber with limited air-holes fabricated with over-cladding bundled rods technique.

Saki Nozoe, Ryohei Fukumoto, Taiji Sakamoto, Takashi Matsui, Yoshimichi Amma, Katsuhiro Takenaga, Kyozo Tsujikawa, Shinichi Aozasa, Kazuhiko Aikawa, Kazuhide Nakajima

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2017

In-service crosstalk monitoring for dense space division multiplexed multi-core fiber transmission systems.

Takayuki Mizuno, Akira Isoda, Kohki Shibahara, Yutaka Miyamoto, Saurabh Jain, Shaif-Ul Alam, David J. Richardson, Carlos Castro, Klaus Pulverer, Yusuke Sasaki, Yoshimichi Amma, Katsuhiro Takenaga, Kazuhiko Aikawa, Toshio Morioka

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2017

1-Pb/s (32 SDM/46 WDM/768 Gb/s) C-band dense SDM transmission over 205.6-km of single-mode heterogeneous multi-core fiber using 96-Gbaud PDM-16QAM channels.

Takayuki Kobayashi, Masanori Nakamura, Fukutaro Hamaoka, Kohki Shibahara, Takayuki Mizuno, Akihide Sano, H. Kawakami, Akira Isoda, Munehiko Nagatani, Hiroshi Yamazaki, Yutaka Miyamoto, Yoshimichi Amma, Yusuke Sasaki, Katsuhiro Takenaga, Kazuhiko Aikawa, Kunimasa Saitoh, Yongmin Jung, David J. Richardson, Klaus Pulverer, Marc Bohn, Md. Nooruzzaman, Toshio Morioka

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2017

200 Gbit/s 16QAM WDM transmission over a fully integrated cladding pumped 7-core MCF system.

Carlos Castro, Saurabh Jain, Yongmin Jung, Erik De Man, Stefano Calabrò, Klaus Pulverer, Marc Bohn, John R. Hayes, Shaif-Ul Alam, David J. Richardson, Katsuhiro Takenaga, Takayuki Mizuno, Yutaka Miyamoto, Toshio Morioka, Werner Rosenkranz

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2017

High Spatial Density Six-mode Seven-core Fibre for Repeated Dense SDM Transmission.

Taiji Sakamoto, Kunimasa Saitoh, Shota Saitoh, Kohki Shibahara, Masaki Wada, Yoshiteru Abe, Azusa Urushibara, Katsuhiro Takenaga, Takayuki Mizuno, Takashi Matsui, Kazuhiko Aikawa, Yutaka Miyamoto, Kazuhide Nakajima

Proceedings of the European Conference on Optical Communication, 2017

125 μm-cladding 2LP-mode and 4-core Multi-core Fibre with Air-hole Structure for Low Crosstalk in C+L Band.

Saki Nozoe, Taiji Sakamoto, Takashi Matsui, Yoshimichi Amma, Katsuhiro Takenaga, Yoshiteru Abe, Kyozo Tsujikawa, Shinichi Aozasa, Kazuhiko Aikawa, Kazuhide Nakajima

Proceedings of the European Conference on Optical Communication, 2017

Improved cladding-pumped 32-core multicore fiber amplifier.

Saurabh Jain, Takayuki Mizuno, Yongmin Jung, Akira Isoda, Kohki Shibahara, John R. Hayes, Yusuke Sasaki, Katsuhiro Takenaga, Yutaka Miyamoto, Shaif-Ul Alam, David J. Richardson

Proceedings of the European Conference on Optical Communication, 2017

2016

High-density multicore fibers.

Katsuhiro Takenaga, Shoichiro Matsuo, Kunimasa Saitoh, Toshio Morioka, Yutaka Miyamoto

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2016

Low-loss and Low-DMD few-mode multi-core fiber with highest core multiplicity factor.

Taiji Sakamoto, Takashi Matsui, Kunimasa Saitoh, S. Saitoh, Katsuhiro Takenaga, Takayuki Mizuno, Yoshiteru Abe, Kohki Shibahara, Yuki Tobita, Shinji Matsuo, Kazuhiko Aikawa, Shinichi Aozasa, Kazuhide Nakajima, Yutaka Miyamoto

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2016

32-core Dense SDM unidirectional transmission of PDM-16QAM signals over 1600 km using crosstalk-managed single-mode heterogeneous multicore transmission line.

Takayuki Mizuno, Kohki Shibahara, Hirotaka Ono, Y. Abe, Yutaka Miyamoto, Feihong Ye, Toshio Morioka, Yusuke Sasaki, Yoshimichi Amma, Katsuhiro Takenaga, S. Matsuo, Kazuhiko Aikawa, Kunimasa Saitoh, Yongmin Jung, David J. Richardson, Klaus Pulverer, Marc Bohn, Makoto Yamada

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2016

2015

High-density multicore fiber with heterogeneous core arrangement.

Yoshimichi Amma, Yusuke Sasaki, Katsuhiro Takenaga, S. Matsuo, J. Tu, Kunimasa Saitoh, Masanori Koshiba, Toshio Morioka, Yutaka Miyamoto

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2015

Quasi-single-mode homogeneous 31-core fibre.

Yusuke Sasaki, S. Saitoh, Yoshimichi Amma, Katsuhiro Takenaga, S. Matsuo, Kunimasa Saitoh, Toshio Morioka, Yutaka Miyamoto

Proceedings of the European Conference on Optical Communication, 2015

Few-mode multi-core fibre with highest core multiplicity factor.

Taiji Sakamoto, Takashi Matsui, Kunimasa Saitoh, Shota Saitoh, Katsuhiro Takenaga, Shoichiro Matsuo, Yuki Tobita, Nobutomo Hanzawa, Kazuhide Nakajima, Fumihiko Yamamoto

Proceedings of the European Conference on Optical Communication, 2015

Measurement of inter-core crosstalk in few-mode multicore fibre.

S. Saitoh, Yusuke Sasaki, Katsuhiro Takenaga, M. Ohashi, Kunimasa Saitoh, Kazuhide Nakajima, Shinji Matsuo

Proceedings of the European Conference on Optical Communication, 2015

Simultaneous measurements of cores in multi-core fibre using OTDR and fan-in/out devices.

M. Ohashi, H. Uemura, Katsuhiro Takenaga, S. Matsuo, Hirokazu Kubota, Y. Miyoshi

Proceedings of the European Conference on Optical Communication, 2015

High-spatial-multiplicity multi-core fibres for future dense space-division-multiplexing system.

Shoichiro Matsuo, Katsuhiro Takenaga, Kunimasa Saitoh, Kazuhide Nakajima, Yutaka Miyamoto, Toshio Morioka

Proceedings of the European Conference on Optical Communication, 2015

2014

Mode multiplexer/demultiplexer based on a partially elongated multi-core fiber.

H. Uemura, Yusuke Sasaki, S. Nishimoto, Takui Uematsu, Katsuhiro Takenaga, K. Omichi, R. Goto, Shinji Matsuo, Kunimasa Saitoh

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2014

12-core × 3-mode dense space division multiplexed transmission over 40 km employing multi-carrier signals with parallel MIMO equalization.

Takayuki Mizuno, Takayuki Kobayashi, Hidehiko Takara, Akihide Sano, Hiroto Kawakami, T. Nakagawa, Yutaka Miyamoto, Yoshiteru Abe, T. Goh, Manabu Oguma, Taiji Sakamoto, Yusuke Sasaki, Itaru Ishida, Katsuhiro Takenaga, Shoichiro Matsuo, Kunimasa Saitoh, Toshio Morioka

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2014

Multicore-fiber cable with core density of 6 cores/mm².

Itaru Ishida, Yoshimichi Amma, Keisuke Hirakawa, Hitoshi Uemura, Yusuke Sasaki, Katsuhiro Takenaga, Naoto Itou, Ken Osato, Shoichiro Matsuo

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2014

Multicore fibre-based mode multiplexer/demultiplexer for three-mode operation of LP01, LP11a, and LP11b.

Katsuhiro Takenaga, H. Uemura, Yusuke Sasaki, S. Nishimoto, Takui Uematsu, K. Omichi, R. Goto, S. Matsuo, Kunimasa Saitoh

Proceedings of the European Conference on Optical Communication, 2014

Few-mode multicore fibre with 36 spatial modes (Three modes (LP01, LP11a, LP11b) ×12 cores).

Yusuke Sasaki, Yoshimichi Amma, Katsuhiro Takenaga, Shoichiro Matsuo, Kunimasa Saitoh, Masanori Koshiba

Proceedings of the European Conference on Optical Communication, 2014

2013

Theoretical study of crosstalk characteristics for multi-core optical fiber amplifiers.

Makoto Yamada, Hirotaka Ono, Norihiko Sakai, Katsuhiro Takenaga, Shoichiro Matsuo

Proceedings of the 2013 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference (OFC/NFOEC), 2013

Investigation of crosstalk dependencies on bending radius of heterogeneous multicore fiber.

Yusuke Sasaki, Yoshimichi Amma, Katsuhiro Takenaga, S. Matsuo, Kunimasa Saitoh, Masanori Koshiba

Proceedings of the 2013 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference (OFC/NFOEC), 2013

Recent progress on multi-core fiber and few-mode fiber.

S. Matsuo, Yusuke Sasaki, I. Ishida, Katsuhiro Takenaga, Kunimasa Saitoh, Masanori Koshiba

Proceedings of the 2013 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference (OFC/NFOEC), 2013

Possibility of stack and draw process as fabrication technology for multi-core fiber.

Itaru Ishida, T. Akamatsu, Z. Wang, Yusuke Sasaki, Katsuhiro Takenaga, S. Matsuo

Proceedings of the 2013 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference (OFC/NFOEC), 2013

2011

An Investigation on Crosstalk in Multi-Core Fibers by Introducing Random Fluctuation along Longitudinal Direction.

Katsuhiro Takenaga, Yoko Arakawa, Shoji Tanigawa, Ning Guan, Shoichiro Matsuo, Kunimasa Saitoh, Masanori Koshiba

IEICE Trans. Commun., 2011

Yb-Doped and Hybrid-Structured Solid Photonic Bandgap Fibers and Linearly-Polarized Fiber Lasers Oscillating above 1160 nm.

Masahiro Kashiwagi, Katsuhiro Takenaga, Kentaro Ichii, Tomoharu Kitabayashi, Shoji Tanigawa, Kensuke Shima, Shoichiro Matsuo, Munehisa Fujimaki, Kuniharu Himeno

IEICE Trans. Electron., 2011

Crosstalk behavior of multi-core fiber with structural parameter drift in longitudinal direction.

Shoichiro Matsuo, Katsuhiro Takenaga, Yoko Arakawa, Yusuke Sasaki, Shoji Tanigawa, Kunimasa Saitoh, Masanori Koshiba

IEICE Electron. Express, 2011

Crosstalk behavior of cores in multi-core fiber under bent condition.

Shoichiro Matsuo, Katsuhiro Takenaga, Yoko Arakawa, Yusuke Sasaki, Shoji Tanigawa, Kunimasa Saitoh, Masanori Koshiba

IEICE Electron. Express, 2011

2006

Holey Fibers for Low Bending Loss.

Ning Guan, Katsuaki Izoe, Katsuhiro Takenaga, Ryuji Suzuki, Kazuhiko Aikawa, Kuniharu Himeno

IEICE Trans. Electron., 2006